齿轮结构三维弹性动力分析与有限元模拟

3-Dimensional Elastic and Dynamic Analysis and FEM Simulation of Gear Structure

建立了齿轮结构的三维弹性体动力学模型 ,按照厚壁板理论推导了弹性体动力学微分方程 ,分析了齿轮弹性体的动力响应和振动固有特性 ,运用有限元数值模拟分析方法进行了对比分析与验证 ,最终给出了三维振型图和三维应力分布图 ,并对齿轮有关参数对动力特性的影响进行了讨论。这给齿轮本体的结构振动分析提供了一种研究方法 ,为齿轮声辐射特性研究以及降噪设计奠定了理论基础。

This paper considers the gear structure as a middle thick plate and 3-dimensional elastic substance. Its vibration differential equation about the elastic dynamics has been set up, the 3-dimensional dynamic response and the natural characteristic of gear structure have been studied, the influence of gear parameter on dynamic characteristic of gear has been discussed. Finally, this paper gives out 3-dimensional shape and stress distribution of gear structure, and these results are contrasted to FEM simulation.